Dreams involving being attacked by an animal, such as a wolf, can evoke strong emotions and often symbolize deeper psychological themes. Here are some interpretations of your dream:

1. Fear and Threat: The wolf in your dream may represent a threat or fear in your waking life. It could signify feelings of vulnerability or being attacked by an external force, whether that's a person, situation, or even an internal conflict.
2. Instincts and Intuition: Wolves are often associated with instincts, intuition, and the wild aspects of nature. Your struggle against the wolf might indicate a confrontation with your primal instincts or unresolved issues that you need to address.
3. Loss and Sacrifice: The injury to the other person in your dream could symbolize feelings of helplessness or the fear of losing someone important to you. It might reflect anxiety about relationships and the potential harm that could come to loved ones.
4. Conflict and Survival: The act of fighting the wolf suggests a struggle for survival or a need to assert yourself in a challenging situation. It could indicate that you're facing obstacles and need to find strength to overcome them.
5. Isolation and Loneliness: Being in a field with two other people but still feeling threatened by the wolf might point to feelings of isolation. Even when surrounded by others, you might feel alone in your struggles.

Since you mentioned not having had a dream in two years, this dream may signify a resurgence of thoughts and feelings that you haven't been able to process. It could be an invitation to reflect on any underlying issues, fears, or conflicts in your life that need your attention.

Consider journaling about your feelings and experiences related to this dream. It may help you gain clarity on what the wolf symbolizes for you and how you can address those feelings in your waking life.